Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d96dec54a5d9da2…

MALICIOUS

PDF

73.5 KB Created: 2021-03-02 21:21:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0fa005035a406002a2dbd4e88850c706 SHA-1: 5d93e63f393f5dc6b03d6bba4dfc9c05150fd84c SHA-256: 7d96dec54a5d9da24ea8fbb61aa335ea99d83224a24a270767e9db90de94cd22
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ponafet.ru/wix?keyword=contour+next+one+uk+user+guide PDF link annotation
    • https://givefatilawasu.weebly.com/uploads/1/3/1/4/131454526/juzatuvujerubo.pdfIn PDF document text
    • http://kungfumalibu.com/pedanu28thm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445340/normal_6031d3b8aa558.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372985/normal_600276623c8a2.pdfIn PDF document text
    • https://romarifekaxa.weebly.com/uploads/1/3/2/6/132683260/5337809.pdfIn PDF document text
    • http://it50save.info/anelia_resort_and_spa_fact_sheetekqjl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392215/normal_5fd9cdd8be1a8.pdfIn PDF document text
    • http://natikolom.site/79478900170t8hme.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406787/normal_600bef4c1cc90.pdfIn PDF document text
    • https://bowotile.weebly.com/uploads/1/3/4/7/134759747/noboxusiniz-bevojiten-volusituxaz-bigiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459467/normal_5ff06143c5c6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427300/normal_60057b20098c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408009/normal_5ff6c14fa1ec1.pdfIn PDF document text
    • https://pudorexejuvaw.weebly.com/uploads/1/3/1/4/131455832/10f166.pdfIn PDF document text
    • http://2022god.com/jepopeditighh97.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://medesawawolujim.epizy.com/ullathai_allitha_songs_isaimini.pdfIn PDF document text
    • http://fegidil.rf.gd/latest_movies_2019_bollywood_free.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CE 4788 bytes
SHA-256: caea33795b127ca9aea5ec1a941a16816b6c32b240db865bb427ca3e6de25ba3
font_01_sfnt_off0000f32b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32B 10716 bytes
SHA-256: b0d6ab68503ead716bceef5735bc26f18676b0c508480390cd364ba0ece95172

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